Unable to load dynamic library(DYLIB) in MacOS
I am trying to load a library(say ArithmeticOprn.dylib) dynamically and call the methods presented within that library. Please refer to the sample code snippet from below,
[DllImport("libdl.dylib")]
public static extern IntPtr dlopen(String fileName, int flags);
[DllImport("ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
static void Main(string args)
{
dlopen("path/to/ArithmeticOprn.dylib", 2);
double result = Add(1, 2);
}
While running the above sample in MacOS, I got the following exception:
Unable to load DLL "ArithmeticOprn.dylib": The specified module or one of its dependencies could not be found.
But, when I provide full path in the DllImport the method call works and I can get the expected results. For your reference, please refer below for the code snippet.
[DllImport("path/to/ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
Could you please let me know what I am missing ? Thanks in advance :)
c# macos dllimport dylib dlopen
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
|
show 2 more comments
I am trying to load a library(say ArithmeticOprn.dylib) dynamically and call the methods presented within that library. Please refer to the sample code snippet from below,
[DllImport("libdl.dylib")]
public static extern IntPtr dlopen(String fileName, int flags);
[DllImport("ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
static void Main(string args)
{
dlopen("path/to/ArithmeticOprn.dylib", 2);
double result = Add(1, 2);
}
While running the above sample in MacOS, I got the following exception:
Unable to load DLL "ArithmeticOprn.dylib": The specified module or one of its dependencies could not be found.
But, when I provide full path in the DllImport the method call works and I can get the expected results. For your reference, please refer below for the code snippet.
[DllImport("path/to/ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
Could you please let me know what I am missing ? Thanks in advance :)
c# macos dllimport dylib dlopen
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
1
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
1
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
2
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
1
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17
|
show 2 more comments
I am trying to load a library(say ArithmeticOprn.dylib) dynamically and call the methods presented within that library. Please refer to the sample code snippet from below,
[DllImport("libdl.dylib")]
public static extern IntPtr dlopen(String fileName, int flags);
[DllImport("ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
static void Main(string args)
{
dlopen("path/to/ArithmeticOprn.dylib", 2);
double result = Add(1, 2);
}
While running the above sample in MacOS, I got the following exception:
Unable to load DLL "ArithmeticOprn.dylib": The specified module or one of its dependencies could not be found.
But, when I provide full path in the DllImport the method call works and I can get the expected results. For your reference, please refer below for the code snippet.
[DllImport("path/to/ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
Could you please let me know what I am missing ? Thanks in advance :)
c# macos dllimport dylib dlopen
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
I am trying to load a library(say ArithmeticOprn.dylib) dynamically and call the methods presented within that library. Please refer to the sample code snippet from below,
[DllImport("libdl.dylib")]
public static extern IntPtr dlopen(String fileName, int flags);
[DllImport("ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
static void Main(string args)
{
dlopen("path/to/ArithmeticOprn.dylib", 2);
double result = Add(1, 2);
}
While running the above sample in MacOS, I got the following exception:
Unable to load DLL "ArithmeticOprn.dylib": The specified module or one of its dependencies could not be found.
But, when I provide full path in the DllImport the method call works and I can get the expected results. For your reference, please refer below for the code snippet.
[DllImport("path/to/ArithmeticOprn.dylib")]
public static extern double Add(double a, double b);
Could you please let me know what I am missing ? Thanks in advance :)
c# macos dllimport dylib dlopen
c# macos dllimport dylib dlopen
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
edited Nov 26 '18 at 15:00
Siguza
12.2k63351
12.2k63351
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
asked Nov 23 '18 at 11:54
RamkumarRamkumar
1961217
1961217
1
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
1
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
2
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
1
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17
|
show 2 more comments
1
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
1
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
2
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
1
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17
1
1
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
1
1
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
2
2
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
1
1
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17
|
show 2 more comments
1 Answer
1
active
oldest
votes
You're trying to short-cut the DllImport behaviour through an explicit dlopen - i.e. using the dlopen to specify the path that's supposed to be used by the DllImport. The problem is that the DllImport link-up is done internally to the C# run-time before the dlopen gets called.
the dlopen never gets a look in.
In order to use DllImport without a path, you need to rely on the default search behaviour, which is locations as specified by the environment variables $LD_LIBRARY_PATH, $DYLD_LIBRARY_PATH, current working directory, $DYLD_FALLBACK_LIBRARY_PATH.
So, for example:
env DYLD_LIBRARY_PATH=path/to/ mono test.exe
which runs the mono interpreter with the path pre-loaded with path/to, allowing it to find the dylib in that location.
Other solutions include moving the library into the directory with the executable, making a symlink to the library in the current working directory.
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
add a comment |
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You're trying to short-cut the DllImport behaviour through an explicit dlopen - i.e. using the dlopen to specify the path that's supposed to be used by the DllImport. The problem is that the DllImport link-up is done internally to the C# run-time before the dlopen gets called.
the dlopen never gets a look in.
In order to use DllImport without a path, you need to rely on the default search behaviour, which is locations as specified by the environment variables $LD_LIBRARY_PATH, $DYLD_LIBRARY_PATH, current working directory, $DYLD_FALLBACK_LIBRARY_PATH.
So, for example:
env DYLD_LIBRARY_PATH=path/to/ mono test.exe
which runs the mono interpreter with the path pre-loaded with path/to, allowing it to find the dylib in that location.
Other solutions include moving the library into the directory with the executable, making a symlink to the library in the current working directory.
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
add a comment |
You're trying to short-cut the DllImport behaviour through an explicit dlopen - i.e. using the dlopen to specify the path that's supposed to be used by the DllImport. The problem is that the DllImport link-up is done internally to the C# run-time before the dlopen gets called.
the dlopen never gets a look in.
In order to use DllImport without a path, you need to rely on the default search behaviour, which is locations as specified by the environment variables $LD_LIBRARY_PATH, $DYLD_LIBRARY_PATH, current working directory, $DYLD_FALLBACK_LIBRARY_PATH.
So, for example:
env DYLD_LIBRARY_PATH=path/to/ mono test.exe
which runs the mono interpreter with the path pre-loaded with path/to, allowing it to find the dylib in that location.
Other solutions include moving the library into the directory with the executable, making a symlink to the library in the current working directory.
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
add a comment |
You're trying to short-cut the DllImport behaviour through an explicit dlopen - i.e. using the dlopen to specify the path that's supposed to be used by the DllImport. The problem is that the DllImport link-up is done internally to the C# run-time before the dlopen gets called.
the dlopen never gets a look in.
In order to use DllImport without a path, you need to rely on the default search behaviour, which is locations as specified by the environment variables $LD_LIBRARY_PATH, $DYLD_LIBRARY_PATH, current working directory, $DYLD_FALLBACK_LIBRARY_PATH.
So, for example:
env DYLD_LIBRARY_PATH=path/to/ mono test.exe
which runs the mono interpreter with the path pre-loaded with path/to, allowing it to find the dylib in that location.
Other solutions include moving the library into the directory with the executable, making a symlink to the library in the current working directory.
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
You're trying to short-cut the DllImport behaviour through an explicit dlopen - i.e. using the dlopen to specify the path that's supposed to be used by the DllImport. The problem is that the DllImport link-up is done internally to the C# run-time before the dlopen gets called.
the dlopen never gets a look in.
In order to use DllImport without a path, you need to rely on the default search behaviour, which is locations as specified by the environment variables $LD_LIBRARY_PATH, $DYLD_LIBRARY_PATH, current working directory, $DYLD_FALLBACK_LIBRARY_PATH.
So, for example:
env DYLD_LIBRARY_PATH=path/to/ mono test.exe
which runs the mono interpreter with the path pre-loaded with path/to, allowing it to find the dylib in that location.
Other solutions include moving the library into the directory with the executable, making a symlink to the library in the current working directory.
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
answered Nov 26 '18 at 16:54
PeteshPetesh
68.7k37296
68.7k37296
add a comment |
add a comment |
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1
Similar questions found stackoverflow.com/questions/12036457/… stackoverflow.com/questions/21577127/…
– Kumar
Nov 23 '18 at 12:03
1
@Kumar There's no answer found in it.
– Ramkumar
Nov 23 '18 at 12:04
Yes. That's why added +1
– Kumar
Nov 23 '18 at 12:04
2
@Kumar - yes he is right no answer is found.
– Suresh Ram
Nov 23 '18 at 12:05
1
What language is this? C#?
– Siguza
Nov 23 '18 at 14:17